EP1310422B1 - Traktor mit Stützelemente und Hebearm besitzendem Anbaurahmen - Google Patents

Traktor mit Stützelemente und Hebearm besitzendem Anbaurahmen Download PDF

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Publication number
EP1310422B1
EP1310422B1 EP20020079699 EP02079699A EP1310422B1 EP 1310422 B1 EP1310422 B1 EP 1310422B1 EP 20020079699 EP20020079699 EP 20020079699 EP 02079699 A EP02079699 A EP 02079699A EP 1310422 B1 EP1310422 B1 EP 1310422B1
Authority
EP
European Patent Office
Prior art keywords
tractor
frame
arm
combination
support means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20020079699
Other languages
English (en)
French (fr)
Other versions
EP1310422A1 (de
Inventor
Bauke Doeke Bergsma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mechanisatie Haarlemmermeer BV
Original Assignee
Mechanisatie Haarlemmermeer BV
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Filing date
Publication date
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Publication of EP1310422A1 publication Critical patent/EP1310422A1/de
Application granted granted Critical
Publication of EP1310422B1 publication Critical patent/EP1310422B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D49/00—Tractors
    • B62D49/02—Tractors modified to take lifting devices
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B51/00—Undercarriages specially adapted for mounting-on various kinds of agricultural tools or apparatus
    • A01B51/02—Undercarriages specially adapted for mounting-on various kinds of agricultural tools or apparatus propelled by a motor
    • A01B51/026—Undercarriages specially adapted for mounting-on various kinds of agricultural tools or apparatus propelled by a motor of the automotive vehicle type, e.g. including driver accommodation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D61/00—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern
    • B62D61/10—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern with more than four wheels

Definitions

  • the invention relates to a combination of a vehicle, in particular a tractor, and at least one frame connected thereto and bearing at least one arm, the at least one frame being arranged on an end of the tractor and being provided with support means, the support means comprising at least one wheel axle that is pivotable about at least one axis.
  • Such a combination of tractor and frame according to the preamble of claim 1 is known, e.g. from US-A-3,006,489.
  • This prior art document discloses a tractor having a frame connected to the outside of its rear axle.
  • the frame extends substantially parallel to the tractor, and has freely pivotable support wheels at the front and the rear.
  • the frame carries an arm which is pivotable about a transverse axis, so that the arm may pick up bales of straw in front of the tractor and transfer these to a trailer on the rear of the tractor through an arc-like pivoting movement.
  • a tractor having a lifting frame at the front.
  • the lifting frame is supported by freely pivotable caster wheels, and carries a vertically movable fork.
  • FR-A-2 318 806 discloses the combination of a tractor and an elevator and conveyor.
  • the elevator is supported by freely pivotable wheels and is connected to the tractor in the way of a trailer.
  • the elevator may be lowered into a support that is attached to the front of the tractor.
  • a lifting device for connection to the front of a tractor.
  • This lifting device does not include wheels, but has fixed supports for placing it on the ground.
  • tractors and arm-carrying frames are known for use in the maintenance of ditches and verges.
  • different devices can herein be fixed to the arm(s), such as for instance mowing machines, hedge trimmers and the like.
  • a tractor is provided with an arm which is directly suspended from a three-point lifting installation available at the front or rear of any conventional tractor.
  • This arrangement has the drawback that the permissible weight of the arm is limited by the maximum lifting capacity of the installation. When work is carried out adjacently of the tractor, this arrangement also results in considerable torsional loads in the chassis of the tractor, which also imposes limitations on the weight and the outreach of the arm. Furthermore, when the arm is fixed to the rear lifting installation it is not easy for the driver of the tractor to monitor the operation of the arm and the equipment mounted thereon, as these will be situated behind him during use.
  • Another known tractor is provided with an attached frame from which the arm extends.
  • the frame can herein be fixed on a side as well as on the front or rear end of the tractor.
  • the arm can extend in lateral direction as well as in forward or rearward direction.
  • This construction results in a large tilting moment about the longitudinal axis (in the case of a frame extension mounted on a side), or about the transverse axis (in the case of a frame extension at the front or rear) of the tractor, whereby the maximum outreach of the arm is limited.
  • a relatively heavy frame is moreover required for this purpose which engages round the frame of the tractor, whereby the tractor is limited in its further possible uses.
  • the invention now has for its object to improve a combination of tractor and arm of the above described type such that the stated drawbacks no longer occur.
  • this is achieved in that the at least one wheel axle is pivotable and steerable about a vertical axis.
  • loads resulting from the weight of the frame and the arm(s), as well as loads resulting from operations carried out by the arm(s) are transferred directly into the ground, whereby the chassis of the tractor is loaded considerably less heavily. Compaction of the ground as a result of the load of the frame and the arm(s) can be minimized by a suitable choice of wheel size and tyre pressure.
  • the wheel axle(s) steerable the combination is easy to manoeuvre.
  • the arm due to the disposition at one end, therefore in the proximity of the longitudinal axis of the tractor, the arm will exert a smaller tilting moment on the tractor. In this manner the operation of the arm(s) can also be readily observed by the driver.
  • the frame will be arranged on the front end of the tractor.
  • the tractor has drive placing means, i.e. steering and controlling elements which can be moved to another position in order to drive the tractor in forward or rearward direction as desired
  • the frame with the arm(s) can also be mounted on the rear of the tractor.
  • the at least one wheel axle can herein be independently steerable, although it also possible to envisage the axle following the movements of the tractor.
  • the wheel axle can be pivotable about the longitudinal axis of the tractor, whereby the wheels can follow unevennesses in the ground.
  • the at least one wheel axle can have an adjustable track width.
  • the frame is preferably connected to the tractor between the front axle and rear axle.
  • the chassis of the tractor is under less torsional load when the arm is extended.
  • the frame is advantageously connected pivotally to the tractor, whereby the torsional load, particularly on the part of the chassis directed toward the frame, is limited even further.
  • the at least one frame preferably has secondary support means for setting down thereof on the ground.
  • the frame can thus be embodied as so-called “drive-in” frame, behind or in front of which the tractor can be quickly placed by simply driving it into the frame.
  • the width of the at least one frame is at most equal to that of the tractor, whereby it is possible to drive closely past obstacles without risk during operations.
  • the invention also relates to a frame having support means and bearing at least one arm, which frame is intended for use in a combination as described above.
  • the or each arm is herein advantageously arranged pivotally on the frame.
  • a combination 1 according to the invention comprises a vehicle 2, in the shown embodiment a tractor, and a frame 3 having (primary) support means 4 and bearing an arm 5 movable in many directions.
  • Tractor 2 is of conventional construction and has a chassis 6 (shown here schematically) supporting a motor and transmission covered by a hood 7, as well as a cab 8.
  • the chassis is carried by an undercarriage consisting of a steerable front axle with relatively small wheels 9 and a rigid rear axle with larger wheels 10.
  • Tractor 2 is provided at the rear (not shown) and at the front with a three-point lifting device 11.
  • Frame 3 is U-shaped in top view and comprises a base part 12 on which an arm 5 is mounted, and two jaws 13 extending on either side of chassis 6 of tractor 2. These jaws 13 are mounted with their ends 14 on supports 15 connected to tractor chassis 6 for pivoting about a transverse axis T. In this manner less torsional loads are transmitted from frame 3 to tractor chassis 6.
  • support means 4 here take the form of a rigid axle 16 which bears on both sides a wheel 17 which is connected to the axle by means of a stub axle 18, and is thus pivotable.
  • the wheels 17 can be steered by means of steering cylinders 19 which will follow steering movements of the front wheels 9 of tractor 2.
  • sensors for sensing this movement, for instance simple potentiometers. It is of course also possible to envisage embodying the wheels 17 of frame 3 in freely pivotable manner, whereby they will follow passively the movement of tractor 2.
  • Axle 16 is hingedly suspended from a pin 20, so that wheels 17 can readily follow unevenness in the ground 21.
  • cylinders 22 are also arranged on either side between axle 16 and frame 3, whereby axle 16 can be placed at a desired angle relative to frame 3, for instance to compensate loads resulting from the arm 5 reaching far to the side.
  • Axle 16 could optionally be given a telescopic form, whereby the track width can be adjusted to the length and outreach of the used arm 5.
  • To frame 3 can also be connected secondary support means 23, here in the form of legs 24 which are releasably connected to jaws 13 and which can each be adjusted in height close to their underside by means of a jack 25.
  • frame 3 With these secondary support means 23 in combination with wheels 17 of (primary) support means 4, frame 3 can be set down in stable manner when it is not in use (fig. 3).
  • the tractor 2 then only has to be driven between jaws 13, whereafter the different hydraulic, electrical and mechanical connections can be effected, legs 24 can be removed and tractor 2 can drive away with frame 3.
  • For the hydraulic and electrical connections use can be made of rapid-action couplings and plugs.
  • the mechanical connections consist on the one hand of pins which are placed through openings in the ends 14 of jaws 13 and supports 15, and on the other of a rapid-action coupling with which the front power take-off (P.T.O.), not shown here, of tractor 2 is connected drivingly to a shaft on frame 3.
  • This shaft in turn drives a hydraulic pump 33 with which pressure is generated in a hydraulic system on frame 3, which is used for instance to drive tools for fixing on arm 5.
  • This hydraulic system comprises among other things a tank 40 for the hydraulic fluid.
  • the arm 5 is pivotally mounted on the base part 12 of frame 3 by means of a turntable 26.
  • This turntable 26 is driven by a motor (not shown here).
  • Arm 5 is formed by a post 27 mounted on turntable 26 and a number of (in this embodiment two) segments 28, 29 pivotally connected to each other by horizontal shafts 30, 31.
  • the movements of segments 28, 29 relative to each other and to post 27 are provided by hydraulic cylinders or motors (not shown here) which are fed by the pump 33 on frame 3 or by the hydraulic system of tractor 2, and are controlled from the cab 8 of tractor 2.
  • On the free end 32 of the outermost segment 29 can be fixed different tools, for instance so-called straw chopper type mowers or hedge trimmers in various widths.
  • Segments 28, 29 of arm 5 can otherwise be exchangeable, whereby arms can be formed of different lengths.
  • the arm 5 can be placed in any desired position by rotating the turntable 26 and pivoting about shafts 30, 31, so as to reach locations where operations must be carried out, for instance mowing a verge or cutting a hedge.
  • Arm 5 herein has a working range of about 300 degrees, to either side and to the front of tractor 2. This is particularly practical for mowing for instance a central reservation of a motorway. During this rotation the driver at all times retains a good view of arm 5 from cab 8.
  • the combination 1 can be made suitable for transport on the road in simple manner.
  • the arm 5 is pivoted to the rear, until it comes to rest on a support (not shown here) on the rear side of tractor 2.
  • Combination 1 hereby becomes very compact and falls within the standards of the Ministry of Transport.
  • Frame 3 is then pivoted upward about axis T by moving the lifting device 11 upward, whereby wheels 17 are moved clear of the ground 21 and tractor 2 can travel at high speed.
  • the lifting device 11 has arms 34 which are each provided with an end part 36 with a roller 37 pivotable about a shaft 35, which roller engages under a support 38 of frame 3.
  • Frame 3 is further provided with a stabilizing cylinder 39, the plunger of which can be fixed to the front axle of tractor 2 by means of for instance a hitch, so as to form an extra connection between frame 3 and the tractor in order to compensate moments resulting from the sideways movement of arm 5.
  • Frame 3 can be used in combination with different types of tractor, with varying dimensions and power.
  • the power as well as the weight of the tractor must of course be chosen to some extent in accordance with the weight and dimensions of frame 3 and arm 5, so as to obtain a stable and efficiently operating combination.
  • the frame could thus have a different form or different dimensions, and could be fixed between the axles of the tractor in a different manner.
  • Different support means could also be used, for instance rollers or caterpillars, while these could also be distributed over more than one axle.
  • the manner of controlling the support means, the form and dimensions of the arm and the manner of driving the different components could also be modified.
  • the secondary support means could further be foldable instead of detachable, or could even be omitted completely. In the latter case the frame could then support in the rest position on the end of the arm.
  • other types of vehicles than tractors for instance shovels and the like, could also be used in combination with the frame.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Machines (AREA)

Claims (11)

  1. Kombination (1) aus einem Fahrzeug (2), insbesondere einem Traktor, und zumindest einem Rahmen (3), der mit diesem verbunden ist und zumindest einen Arm (5) trägt, wobei der zumindest eine Rahmen (5) an einem Ende des Traktors (2) angeordnet ist und mit Abstützmitteln (4) versehen ist und die Abstützmittel (4) zumindest eine Radachse (16) aufweisen, welche zumindest um eine Achse schwenkbar ist, dadurch gekennzeichnet, dass die zumindest eine Radachse (16) um eine vertikale Achse schwenkbar und steuerbar ist.
  2. Kombination (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die zumindest eine Radachse (16) unabhängig steuerbar ist.
  3. Kombination (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass der Traktor (2) lenkbare Vorderräder (9) aufweist und dass die zumindest eine Radachse (16) so angeordnet ist, dass sie den Bewegungen der Vorderräder (9) des Traktors (2) folgt.
  4. Kombination (1) gemäß einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die zumindest eine Radachse (16) um eine Längsachse (20) schwenkbar ist.
  5. Kombination (1) gemäß einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die zumindest eine Radachse (16) eine einstellbare Spurweite aufweist.
  6. Kombination (1) gemäß einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der Traktor (2) eine Vorderachse und eine Hinterachse aufweist und dass der zumindest eine Rahmen (3) zwischen der Vorderachse und der Hinterachse mit dem Traktor (2) verbunden ist.
  7. Kombination (1) gemäß einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der zumindest eine Rahmen (3) schwenkbar mit dem Traktor (2) verbunden ist.
  8. Kombination (1) gemäß einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der zumindest eine Rahmen (3) Neben-Abstützmittel (23) aufweist, die auf dem Boden absetzbar sind.
  9. Kombination (1) gemäß einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Breite des zumindest einen Rahmens (3) maximal gleich der Breite des Traktors (2) ist.
  10. Rahmen (3), der Abstützmittel (4) aufweist und zumindest einen Arm (5) trägt, und der offensichtlich zur Verwendung in einer Kombination (1) vorgesehen ist, wie sie in einem der vorangegangenen Ansprüche beansprucht ist.
  11. Rahmen (3) mit Abstützmitteln (4) gemäß Anspruch 10, dadurch gekennzeichnet, dass der oder jeder Arm (5) schwenkbar an dem Rahmen (3) angeordnet ist.
EP20020079699 2001-11-09 2002-11-08 Traktor mit Stützelemente und Hebearm besitzendem Anbaurahmen Expired - Lifetime EP1310422B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1019339 2001-11-09
NL1019339 2001-11-09

Publications (2)

Publication Number Publication Date
EP1310422A1 EP1310422A1 (de) 2003-05-14
EP1310422B1 true EP1310422B1 (de) 2006-05-17

Family

ID=19774287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020079699 Expired - Lifetime EP1310422B1 (de) 2001-11-09 2002-11-08 Traktor mit Stützelemente und Hebearm besitzendem Anbaurahmen

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EP (1) EP1310422B1 (de)
DE (1) DE60211450D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103650669B (zh) * 2013-12-27 2015-11-18 重庆坤越机械制造有限公司 一种微型开沟机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427301A (en) * 1946-04-03 1947-09-09 Manuel E Puim Buck rake loader attachment for tractors
US3006489A (en) * 1959-03-16 1961-10-31 Gustin Fils Sa Ets Device for lifting and handling bales of straw fodder or the like
AT298336B (de) * 1968-09-03 1972-05-10 Rudolf Arbeithuber Hubstapler
FR2318806A1 (fr) * 1975-07-22 1977-02-18 Bourgoin Sa Ets J Elevateur de recolte a chaine transporteuse
EP1052214B1 (de) * 1999-05-06 2002-07-31 Merlo S.P.A. Industria Metalmeccanica Fahrzeug verwendbar wie Hebevorrichtung und wie Ackerschlepper

Also Published As

Publication number Publication date
EP1310422A1 (de) 2003-05-14
DE60211450D1 (de) 2006-06-22

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